pronounced 再问

In 1713, Alexander Pope began his translation of the Iliand, a work that, taking him seven years until completion, and that literary critic Samuel Johnson, Pope's contemporary, pronounced the greatest translation in any language.

A. his translation of the Iliand, a work that, taking him seven years until completion, and that literary critic Samuel Johnson, Pope's contemporary, pronounced

B.his translation of the Iliand, a work that took him seven years to complete and that literary critic Samuel Johnson, Pope's contemporary, pronounced

C. his translation of the Iliand, a work that had taken seven years to complete and that literary critic Samuel Johnson, Pope's contemporary, pronounced it as

D. translating the Iliand, a work that took seven years until completion and that literary critic Samuel Johnson, Pope's contemporary, pronounced it as

E. translating the Iliand, a work that had taken seven years to complete and literary critic Samuel Johnson, Pope's contemporary, pronounced it

the answer is B. but what is the structure of "pronounced" here ? is it an adj? or a verb? 如果是动词,为什么结构不是 something be pronounced as ...? 答案中的AS为什么省了呢?

pronounce

做宣告 声称讲时是VT